Slide 1

Unit 2 Review Ecology: study of living things and how they interact

1Ecosystem: living things and their environment

Please pause the audio and try to answer the following questionsWhat are some non-living parts of this environment?

What is the habitat where the fish live?

Where does the energy for this ecosystem come from?

Food webs show us how energy in food is passed from one living thing to another. All living things need energy and nutrients to survive.They get energy through eating (consumers) like animals or by making their own food (producers) like plants.

Can you match the living thing with the food they eat?Living Thing

Foods they likeCarnivores eat meat

Omnivores eat everything

Herbivores eat plants

Decomposers eat dead things

Symbiosis: a relationship between two living thingsThree Types of relationships

Mutualism: both help each other. The ants protect aphids and farm them for their honeydewCommensalism: one is helped. The remoras eat bits of food the sharks drop.Parasitism: one is helped and the other is hurt. Ticks feed off living things but carry diseases.

Images from www.gcs.k12.nc.us www.globalwarmingweb.com www.king.portlandschools.comLiving things and what they eat all from clipartwww.nationalgeogrphic.com www.richsoil.comwww.doh.wa.gov